Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The shift from April to May brings an increase in the average high-temperature, moving from a chilly 49.8°F (9.9°C) to a moderate 59.7°F (15.4°C). Wilmette experiences an average low-temperature of 49.6°F (9.8°C) in month of May.Humidity
In Wilmette, the average relative humidity in May is 79%.Rainfall
In Wilmette, Illinois, in May, it is raining for 17.2 days, with typically 4.41" (112mm) of accumulated precipitation. In Wilmette, Illinois, during the entire year, the rain falls for 154.1 days and collects up to 33.31" (846mm) of precipitation.Snowfall
May through September are months without snowfall in Wilmette, Illinois.Daylight
In Wilmette, the average length of the day in May is 14h and 35min.On the first day of May in Wilmette, sunrise is at 5:45 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:19 pm CDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in May leads to these recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
What is the usual temperature for Wilmette in May?
What is the average humidity in May in Wilmette?
How many days does it rain in May in Wilmette?
When it does not snow in Wilmette?
Does it snow in Wilmette in May?
How many hours of daylight does Wilmette have in May?
What time are sunrise and sunset in May in Wilmette?
How long on average sun shines in May in Wilmette?
How high is the UV index in May in Wilmette?
Average temperature in May
Wilmette, IL
- Average high temperature in May: 59.7°F
The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in May: 49.6°F
The months with the highest average low temperature are July and August (68°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in May
Wilmette, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Wilmette, IL
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is January (12.7mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).
Average humidity in May
Wilmette, IL
- Average humidity in May: 79%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Wilmette, IL
- Average rainfall in May: 4.41"
The wettest month (with the highest rainfall) is June (4.49").
The driest month (with the least rainfall) is December (1.38").
Average rainfall days in May
Wilmette, IL
- Average rainfall days in May: 17.2 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in May
Wilmette, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Wilmette, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Wilmette, IL
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Wilmette, IL
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is December (15.3 days).
The months with the least sunshine days are June and July (10.9 days).
Average UV index in May
Wilmette, IL
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Wilmette, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in May
Wilmette, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Wilmette, Illinois, USA
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